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General Chemistry

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Chemical Bonding

Question
4 out of 13
 

Ammonia (NH3) can bond with boron trifluoride (BF3). For the bond formation, the electrons are most likely supplied by:

A Nitrogen
B Boron
C Both boron and nitrogen because the bond formed is covalent
D Hydrogen
Ans. A Ammonia (NH3) and boron trifluoride (BF3) can undergo a special type of covalent bonding - coordinate covalent bond. Even though this is a covalent bond, the electrons for the bond formation are supplied by one of the partners involved in the bonding. Boron has only three electrons in its outermost shell and they are already involved in the formation of the BF3 molecule itself. There are no more electrons available from boron. But that is not the case with the nitrogen atom in NH3. Two lone electrons are available from the nitrogen in NH3 which make this bond formation possible.

Chemical Bonding Flashcard List

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